Sept 1 (Reuters) - Rmp Energy Inc RMP.TO :
* RMP Energy announces $80 million disposition of assets and name change
* Says company will retain its Oil and Gas properties and associated interests in its core Elmworth area of operations
* Says Tangle Creek will buy all of co's crude oil and natural gas interests in some areas of West Central Alberta
* Says consideration to be received by co at closing of deal comprised of $71.0 million in cash, about 13.85 million common shares of Tangle Creek